baber/WOPTO huggingface dataset:
Patent GB-862148-A (GB)
Title: Igniter and ignition system
Inventor: DOMBRAS LEONARD THOMAS
IPC: F02C7/264
Filed: 1958-02-04
Abstract: 862,148. Igniting burners. REACTION MOTORS Inc. Feb. 4, 1958, No. 3693/58. Class 75 (3). [Also in Group XXVII] An igniter for a jet propulsion motor comprises two electrodes 10, 11 defining a sparking area, a plenum chamber 16 communicating through a restriction 17 with a combustion chamber 18 having a restriction 20 at its outlet, means for supplying fuel to the combustion chamber and means for causing oxidizer, such as oxygen or ozone, to flow between the electrodes to the plenum chamber and then into the combustion chamber. It is stated that the oxidizer is dissociated between the electrodes and re-combines in the restriction 17. The plenum chamber 16, the restriction 17, the combustion chamber 18 and the outlet restriction 20 are formed by two annuluses 16a and 19 welded end to end. The annulus 16a is also welded to the outer annular electrode 11. The oxidizer is supplied through a pipe 23 to the annular passage 14 between the electrodes and passes through holes 13b in an insulating spacer 13 to the sparking area between the tips of the electrodes and hence to the plenum chamber. Fuel is supplied by a pipe 22 to a passage 33 formed between the electrode 11, annuluses 16a, 19 and a cylindrical jacket 21 and passes through passages 32 in the annulus 16a to the combustion chamber 18. Fuel also passes through passages 29 in the divergent part of the second restriction 20 to discharge into the flame and combustion gases to provide an after burner. The oxidizer and fuel flows are controlled by individual electromagnetic valves and the spark is generated by a coil, the coil and valves being energised from an earthed battery through a common switch. The oxidizer passes through a pressure regulator. Non-return valves are disposed in the oxidizer and fuel pipes. In a modification (Fig. 2, not shown) fuel is delivered to the combustion chamber only but the supply passages are arranged so that the fuel flows to the tip of the igniter and then back to the entry passages 32 of the combustion chamber. Semi-conductor material is disposed between the sparking tips of the electrodes, holes being provided in the material for the flow of oxidizer.
Patent GB-744231-A (GB)
Title: Improvements relating to the production of strip material
IPC: C23C4/14
Filed: 1951-02-15
Abstract: 744,231. Coating with metals. MORLE, C. W. (Brennan, J. B.). Feb. 15, 1951, No. 3712/51. Class 82(2). [Also in Group XXIX] At least one face of a base strip is subjected to two or more spray applications, each forming a deposit which is uniform longitudinally of the strip but variable in density transversely thereof, the result of the combined applications being to form a deposit substantially uniform in thickness both longitudinally and transversely of the strip. Strip material for electrolytic condensers may be so built up by spraying a porous gauze or paper base strip with aluminium; alternatively, metal base strips may be coated and the coating stripped therefrom or fibrous bases may be coated and the fibrous base burned off the resultant strip. Coating may be effected by passing a strip past two nozzles offset to opposite sides of the longitudinal centre line of the strip ; both faces of the strip may be similarly coated. Alternatively, abutted strips may be passed by a nozzle opposite the abutting edges, the strips being then transferred and passed by a second nozzle; or a single strip, passed centrally by the nozzle, may be divided longitudinally and the halves transferred and resprayed ; or abutting strips may be passed by a nozzle offset with respect to the abutting edges, transferred and resprayed, and a further application effected centrally of that strip which has received only marginal applications in the first two spraying stages. In another form, Figs. 8 and 9, additional spray applications are effected along the longitudinal edges of the strip by deflection of the outer parts of the main spray by rotary discs 26 or fans. In Fig. 10, strip is coiled helically on a mandrel 45, each convolution passing three times through the field of a gun 46 to coat one face, the other face being similarly treated on the mandrel 47 by the gun 48. In Fig. 11, guns 51, 52 spray the centre of opposite faces of a strip which is then divided longitudinally and the edges transposed, the strip being then passed by guns 61, 62 disposed over the abutting edges ; or, instead of dividing a single strip, abutting strips may be passed through this apparatus. In another form, Fig. 13, rolls 67, 68 replace the single mandrel of Fig. 10; such rolls may be cooled and provided with scraper blades. Alternatively, Fig. 14, backing rolls 82 and guide rolls 83, 84 are used,
Patent GB-281132-A (GB)
Title: Improvements in connection with sun blinds or awnings
IPC: E04F10/06
Filed: 1927-02-10
Abstract: 281,132. Page, A. C. Feb. 10, 1927. Window blinds.-The sliding and hinged side arm A of a sun blind is supported by a radius rod B carrying a hinged extension rod b<1> pivoted to the side arm near its outer end, a second radius rod b being pivoted to the rod B or extension rod b<1> to the arm A near its lower end. When the side arms are of the known knuckle joint type the rod b<2> is pivoted to the arm A at the knuckle joint. In the case of pivoted side arms A, Fig. 5, the lower end of the second radius rod b is pivotally attached to a slide D working on a guide secured to the shop front either above or below the side arm, the arrangement being such that the slide moves upward when the blind is unwound. In all cases the rod b<2> may be slidably, as well as pivotally, connected to the rod B or b<1>, a spring S being arranged on the end b<2>, so that when the blind is extended the spring acts as a shock absorber, and in the event of the wind lifting the blind lath a<1> the spring allows the lath to fall back gently. The spring also prevents the main spring of the blind causing the lath a<1> to strike the part of the blind base with sufficient force to break the facia &c.
Patent GB-250709-A (GB)
Title: Improvements in stair carpet and like fastenings
IPC: A47G27/06
Filed: 1925-02-12
Abstract: 250,709. Shaw & Co., Ltd., A., and Rose, C. E. Feb. 12, 1925. Stair-carpet fasteners arranged in pairs over opposite edges of the carpet comprise each an arm 3<a> with a projecting tongue piece 4<a> bent therefrom to form a bifurcation at one end having a wedge fit with a projection 1<a> on a bracket on the stairs. The fork members 3a, 4<a> may be bevelled and a spring blade 7b attached to the bracket may engage a recess 7<a> in the tongue piece 4<a>. Alternatively, a transverse or longitudinal spring 7<b> attached to the projection 1<a> on the bracket engages a recess in the bifurcation.
Patent GB-548867-A (GB)
Title: An improved press for cutting sheet metal
IPC: B23D27/04
Filed: 1941-03-24
Abstract: 548,867. Punching-machines. RHODES, C. J. March 24, 1941, No. 3969. [Class 83 (iv)] In a press for punching strip metal the punch moves in an elliptical path a, b, c, d, Fig. 9, punching being effected while the work x is firmly held between plates 14, 12, Fig. 4, which also feed the work. The punch 11 is carried by a slide 10 vertically movable in a slide 15 which is itself vertically movable on rods 15a of a slide 4 horizontally movable in guides 3, 19 of the frame 1 of the machine, the slide 10 being pivoted at 7a to a beam 7 which has a floating pivot 8a, connected by a link 8 to a fixed pivot 9, and is moved by a variable throw crank 6. The slide 15 carries the plate 14 and is pressed down by springs 21, this movement being limited by an adjustable wedge 23 of the slide 15 engaging a projection 10a of the slide 10. During the movement c of the slide 10 and punch 11 the plate 14 engages the work and the punch perforates it, during b the work is fed, by the plates 12, 14; during d the punch is stripped and then the wedge 23 is engaged by the part 10a and the plate 14 raised, and during movement a the punch and the plates 12, 14 are returned to the starting position, retrograde movement of the work x being prevented by spring-pressed pawls 23a and 38. The pawl 23a is carried by a support 24a pivoted at 224 and pressed against the frame 1 by a spring 30 so that it can be turned out of normal position by a handle 24b for insertion of a fresh work-strip. A strip greaser 35 may be carried by this support. The pawl 38 may be raised, during the movement b, by an intermediate pivoted member 40a which engages it and also the beam 7 when in its lower position. The machine may be duplex to operate on two work-strips simultaneously.
Patent GB-396457-A (GB)
Title: Improvements in or relating to links for travelling chain grate stokers
IPC: F23H11/00
Filed: 1932-02-10
Abstract: 396,457. Furnace grates. THORNTON, B. M., Winnington Hall, Northwich, Cheshire, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Mill bank, London. Feb. 10, 1932, No. 4024. [Class 51 (i).] In a link, for a travelling chain grate stoker, of the type having one or more open-ended slots, for the reception of transverse pivotal supports, locking elements for closing at least one such slot, so as to lock the link in position on the pivotal supports, the locking elements being moved into their locking position by the fitting of the link on to the pivotal supports, the locking element comprises a hook 4 maintained in its locking position by gravity, so shaped that the end 7 extends at least to a position below the edge 8 of the pivotal support 6 remote from the pivot 5 of the hook. The hook may be fitted to both slots 2 and may be located in a recess in the side of the link, or one slot may be free and inclined to the vertical at 3.
Patent GB-878992-A (GB)
Title: Improved swaging machine
IPC: H02K33/16
Filed: 1959-02-05
Abstract: 878,992. Changing frequency. TUYAUX FLEXIBLES RUDOLPH. Feb. 5, 1959 [Feb. 18, 1958], No. 4071/59. Class 38 (2). [Also in Group XXII] A frequency converter for feeding the stator windings 37, 38 of a vibrating swaging hammer (see Group XXII) comprises an input transformer 53 whose primary is connected at 51, 52 to an alternating mains supply and whose secondary is connected through rectifiers 54, 68 to the primary centre tap 56 of another transformer 57; a tapping 55 carries rectified current to the hammer armature winding 28. The primary of transformer 57 is connected through resistances 66, 67 with thyratrons 58, 59 whose grids are connected through a transformer 61 with one of a number of interchangeable quartz crystals 60 which determine the output frequency. The stator windings 37, 38 are connected across the secondary of transformer 57.
Patent GB-1450627-A (GB)
Title: Opto-electronic devices
IPC: H01J1/34
Filed: 1974-01-29
Abstract: 1450627 Semi-conductor device; photocathode STANDARD TELEPHONES & CABLES Ltd 29 Jan 1974 4071/74 Headings H1K and H1D An opto-electronic heterostructive semiconductor device, e.g. a photocathode, image converter, photodiode or photo-transistor, includes an N-type barrier layer sandwiched between a P-type photo-responsive layer, of material having a band gap less than that of the barrier layer, and a P-type layer of material having a band gap greater than that of the photo-responsive layer but not greater than that of the barrier layer, wherein the doping level of the barrier layer is such that at the mid-point of the layer its conduction band is at a level, in the unbiased condition, substantially midway between the levels of the flat portions of the conduction bands of the two adjacent P-type layers. The heterojunction boundaries may be sharp, as shown in Figs. 2(a) with the spikes in the conduction band being due to space charge effects, or the boundaries may be graded, as shown in Figs. 2(b). In addition, the doping level and thickness of the barrier layer must be such that, upon application of an electrical bias sufficient to align the conduction bands of the two P-type layers, the width of the depletion layer is greater than the thickness of the barrier layer, and the width and depth of the potential barrier in the valence band of the barrier layer must be sufficient to block tunnelling of holes into the photoresponsive, while the spikes, if present, in the conduction band are sufficiently narrow to permit tunneling into the other P-type layer of electrons raised to the conduction band by radiation incident on the photoresponsive layer. Specific examples are given for a (Ga x  In 1-x )(As y  P 1-y ) semiconductor system in which, preferably, the doping levels are the same in all three layers. The exposed face of the second P-type layer may be coated with caesium oxide to promote electron emission therefrom. Alternatively this coating may be replaced by a further N-type layer to convert the device to a photodiode, and an additional P-type layer on top of this may convert the device to a phototransistor.
Patent GB-419185-A (GB)
Title: Improvements in and relating to pressure regulators
IPC: G05D16/16
Filed: 1934-02-07
Abstract: 419,185. Regulating compression. BORSIG MASCHINENBAU AKT.-GES., A., 19, Berlinerstrasse, Tegel, Berlin. Feb. 7, 1934, No. 4096. Convention date, Nov. 25, 1933. [Class 8 (i).] The regulation of an air compressor is effected by a bellows 5 subjected interiorly to a constant gas pressure through pipe 15, annular chamber 14 and bore 16. The air reservoir is connected to a pipe 23 connected by a channel 25 to the annular space surrounding the bellows. Variations of the pressure delivered cause movements of the end plate 7 which is connected to a control valve 9 that connects the pipe 26 to pressure or exhaust. A valve 27 is mounted in the suction pipe of the compressor and its end forms a piston subjected to pressure in the pipe 26. The valve 27 may be replaced by any other means to regulate the delivery of the compressor. In a modification the delivery pressure is applied to a second bellows mounted co-axially with the bellows 5.
Patent GB-451938-A (GB)
Title: Process for the manufacture of phosphoric acid esters from flavines
IPC: C07F9/64
Filed: 1935-02-08
Abstract: Phosphoric acid esters of 9-oxyalkyl-isoalloxazines are prepared by reacting on a 9-oxyalkyl-isoalloxazine with a phosphorylating agent, i.e. phosphorus halides, oxyhalides or oxides or metaphosphoric acid esters.  Reaction is advantageously carried out in an organic base starting at a low temperature followed by gentle heating.  In the case of esterified polyoxyalkyl derivatives, the ester groups may be saponified in stages.  Purification from unchanged starting material may be effected by further esterification or etherification with an organic acylating agent or with an aldehyde or ketone respectively, followed by extraction with an organic solvent to leave the phosphorylated compound behind; if necessary careful saponification of the latter yields a product still containing the phosphoric acid ester radicles.  Further purification of these phosphorylated compounds is effected by conversion to the difficulty soluble metal salts, for instance, silver, lead, copper, barium or calcium, from which the esters are again liberated by means of hydrogen sulphide. These esters form products with albuminous substances which exert a catalytic effect on oxidation processes and also they exert growth promoting action.  In examples: (1) 6,7-dimethyl-9-(d-ribityl)-isoalloxazine is treated. in pyridine with phosphorus oxychloride at 0 DEG  C and then at room temperature; the ester is isolated as the silver salt and freed therefrom by means of a hydrogen sulphide; (2) 9-dioxypropylisoalloxazine is treated as in (1) and similarly phosphoric acid esters of 6,7-dimethyl-9-dioxypropylisoalloxazine and 9-(1- and d-arabityl)-isoalloxazine and of the corresponding 6,7-dimethyl compounds are prepared; (3) 6,7-dimethyl-9-(d-ribityl)-isoalloxazine is treated in pyridine containing boric acid with phosphorus oxychloride at room temperature for several days with occasional heating to 40--50 DEG  C.; the mixture is then purified by acetylation with acetic anhydride, extraction with chloroform and treatment of the remaining aqueous solution with cold dilute caustic soda solution; further purification is effected by conversion to the lead or silver salts or by adsorption to fuller's earth or lead sulphide; (4) the foregoing isoalloxazine is treated with phosphorus oxychloride in pyridine with rather more heating, then acetylated with acetic anhydride and extracted with chloroform; the aqueous layer is mixed with acetic acid and the phosphoric acid ester adsorbed on "Frankonit," (Registered Trade Mark).  The latter is then stirred with a pyridine-methanol-water mixture at 70 DEG  C. and the dye isolated as a silver salt.  This is then decomposed with hydrogen sulphide and any acetyl radicles are split off by a short treatment with dilute alkali; the product is finally isolated as the calcium salt; (5) 9-dioxypropylisoalloxazine is treated as in (4). Specification 441,692 is referred to.
Patent GB-747381-A (GB)
Title: Improvements in a method and apparatus for manufacturing filter mouthpiece tobacco articles such as cigarettes, and tobacco articles so produced
IPC: A24C5/47
Filed: 1954-02-12
Abstract: 747,381. Applying filter mouthpieces. KORBER, K. Feb. 12, 1954 [Feb. 24, 1953; Feb. 25, 1953; Feb. 26, 1953; Feb. 28, 1953], No. 4182/54. Class 130. In a mouthpiece cigar or, as shown, cigarette, a filter tip 4a, Fig. 9, is attached to a cigarette rod length by two superposed uniting bands 6, 15 applied externally of the length and tip and of different widths but both overlying the end of the length. As shown, there are three filter tips 4a, 13a, 20a respectively of crepe paper, paper cuttings and ceramic material and each attached to the length 1 primarily by a separate uniting band 6, 15, 30 respectively. The bands 6, 15 may be coloured and annular zones 6a, 15a thereof left exposed for identification as of the filter tip materials used or of other features possessed by the cigarette such as a glowretarding mouthpiece. The zone 15a may be omitted, or all the bands be co-terminous at their inner ends. The diameter of the tips 4a, 20a may be respectively slightly less and more than that of the tip 13a. The tips may be cylindrical, oval, or, in the case of a cigar, rectangular and are attached in succession on a series of fluted drums such as 3, 11, Fig. 3. Directly or via a double hopper (not shown) the first drum 3 receives from a cigarette-making machine in each flute a pair of cigarette rod lengths spaced apart by more than the length of a double-length tip 4 supplied between them from a hopper 4d. Side deflectors 5 then cause the lengths and tip in each flute to abut and uniting bands 6 cut at 7 from a web 6b and supplied with adhesive by a device 8 are applied to the resulting assemblies and wrapped therearound after assembly transference to a suitably equipped wrapping drum 9. A knife 10 then divides each assembly centrally and it passes to the second fluted drum 11 via a conveyer 26 on which a central deflector 12a spaces the divided parts ready for further tip insertion. The divided assemblies may pass between the drums 9, 11 via a rotary drum conveyer or directly, the central deflector being in the latter case provided in conjunction with the drum 11. The final wrapping drum delivers divided assemblies each comprising two finished mouthpiece cigarettes. The various drums may hold the transferred elements mechanically or by suction. Instead of using a succession of fluted drums, the same drum having suitably adjustable parts may be used successively for the various tipping operations.
Patent GB-130285-A (GB)
Title: A Combination Centre Drill and Countersinking Device.
Inventor: HENLEY CHARLES FREDERICK
IPC: B23B51/10
Filed: 1919-02-20
Abstract: 130,285. Henley, C. F., and Kinnard, E. H. Feb. 20, 1919. Drills.-In a combined centre drill and countersink of the type in which the cutting-edges of the countersink lie within the grooves of the drill the countersink is provided with slots and clearance holes so as to grip the drill carried therein when placed within the chuck of a lathe or tool-holder. The countersink a is bored at c to receive the drill shank b and at d for the cutting portion f of the drill, the cutting portions e, of the countersink lying within the grooves of the drill. The countersink is provided with slots g and holes h so as to grip the 'drill.
Patent GB-749444-A (GB)
Title: Interlocking alphabet letters or the like for toys and other purposes
Inventor: DAVEY ALBERT EDWARD
IPC: G09F7/02
Filed: 1953-02-16
Abstract: 749,444 Signs. INJECTION MOULDERS, Ltd. March 2, 1954 [Feb. 16, 1953], No. 4246/53. Class 3(2) [Also in Group XV] Cut out letters &c. have on opposite sides an undercut recess 3 and a complementary interlocking projection 4 whereby the letters &c. may be joined together to form words &c., the projection on one letter being fitted into the recess in another letter only by relative movement in a direction transverse to the plane of the letters, so the letters are interlocked against 'separation in all other directions. The letter &c. may be moulded from opaque or transparent synthetic resin plastic material integral with a base portion 2 which is provided with the recess 3 and projection 4. One or more outward projections 5 may be formed on the base so that the letters may stand upright.
Patent GB-430445-A (GB)
Title: Improvements relating to electro-magnets
IPC: H01F7/20
Filed: 1934-02-09
Abstract: 430,445. Electromagnets. ELECTROMAGNETS, Ltd., and BOX, W. E., 2, Church Street, Colmore Row, Birmingham. Feb. 9, 1934, No. 4289. [Class 35] An electromagnet is provided with polepieces each having several differently formed edges, and so arranged that different edges of the two polepieces can be made to face each other so as to give fields of different characteristics. The Figure shows polepieces 11 each having one flat edge and one toothed, one with a salient obtuse angle and one with are -entrant angle. The polepieces are secured to the cores by screws 9, about which they can be turned.
Patent GB-437328-A (GB)
Title: Improvements in fuel injection pumps
IPC: F02M59/02
Filed: 1935-02-11
Abstract: 437,328. Fuel-injection pumps. CLAUSEN, C. H., 75, Frejgatan, Stockholm. Feb. 11, 1935, No. 4300. Convention date, Feb. 16, 1934. [Class 102 (i)] A fuel-injection pump comprises a plunger 1 actuated by a cam 3 shaped as an eccentric with a flat or slightly curved surface at one part of its periphery. The plunger has a control edge co-operating with the suction port 11 which determines the amount of fuel in the cylinder when compression takes place. The fuel is delivered past the valve 10 to an accumulator plunger 7 loaded by springs 8. At the end of the next suction stroke the groove 13 registers with the delivery port 12 and the fuel trapped by the plunger 7 passes through the groove 14 and recess 15 to the port 12. When the edge 16 covers the port 12 the plunger 7 is brought to rest by the liquid cushion in the pipe 9. In Fig. 2 the plunger 7 is in alignment with the plunger 1 and is integral with the larger piston 8<a>. When the plunger 7 rises fuel is drawn in through ports 15<a> from the surrounding chamber which is in communication with the suction 11. Upon downward movement of the plunger 7 when the lower end of the piston 8<a> closes the ports 15<a>, the fuel trapped in the space 14<a> forms a liquid cushion.